DS1747WP-120 查看數據表（PDF） - Maxim Integrated
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DS1747WP-120 Datasheet PDF : 16 Pages
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DS1747/DS1747P Y2K-Compliant, Nonvolatile Timekeeping RAMs
AC CHARACTERISTICS—WRITE CYCLE (5V)
(VCC = 5.0V ±10%, TA = Over the Operating Range.)
PARAMETER
SYMBOL MIN TYP
Write Cycle Time
tWC
70
Address Setup Time
tAS
0
WE Pulse Width
tWEW
50
CE Pulse Width
tCEW
60
Data Setup Time
tDS
30
Data Hold Time
tDH1
0
Data Hold Time
tDH2
0
Address Hold Time
tAH1
5
Address Hold Time
tAH2
5
WE Data Off Time
tWEZ
Write Recovery Time
tWR
5
MAX
25
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTES
8
9
8
9
AC CHARACTERISTICS—WRITE CYCLE (3.3V)
(VCC = 3.3V ±10%, TA = Over the Operating Range.)
PARAMETER
SYMBOL MIN TYP
Write Cycle Time
tWC
120
Address Setup Time
WE Pulse Width
CE Pulse Width
Data Setup Time
Data Hold Time
Data Hold Time
Address Hold Time
Address Hold Time
WE Data Off Time
Write Recovery Time
tAS
0
tWEW
100
tCEW
110
tDS
80
tDH1
0
tDH2
0
tAH1
0
tAH2
10
tWEZ
tWR
10
MAX
120
40
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTES
8
9
8
9
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